Patents by Inventor Hirokazu Suzumura

Hirokazu Suzumura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200350341
    Abstract: The purpose of the present invention is to realize the display device having thin film transistors of the oxide semiconductor of stable characteristics. An example of the concrete structure is that: A display device having a substrate including a display area, plural pixels formed in the display area, the pixel includes a first thin film transistor having an oxide semiconductor film, a first insulating film made of a first silicon oxide on a first side of the oxide semiconductor film, a second insulating film made of a second silicon oxide on a second side of the oxide semiconductor film, wherein oxygen desorption amount per unit area from the first insulating film is larger than that from the second insulating film, when measured by TDS (Thermal Desorption Spectrometry) provided M/z=32 and a measuring range in temperature is from 100 centigrade to 500 centigrade.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Applicant: Japan Display Inc.
    Inventors: Akihiro HANADA, Yohei YAMAGUCHI, Hirokazu WATANABE, Isao SUZUMURA
  • Publication number: 20200256097
    Abstract: A door check apparatus for a vehicle includes a first tubular member connected to a vehicle body to be pivotable relative to the vehicle body, a second tubular member movable relative to the first tubular member in an axial direction, a bracket connecting the second tubular member to a swing door in such a manner that the second tubular member is pivotable relative to the swing door, the second tubular member including a pair of engagement protrusions forming a pivot shaft of the second tubular member, the bracket including a pair of support walls including engagement holes engaging with the engagement protrusions, and at least one of the support walls being provided with an opening portion allowing the engagement protrusion to be inserted into the engagement hole and a closing member closing the opening portion in a state where the engagement protrusion is inserted in the engagement hole.
    Type: Application
    Filed: February 12, 2020
    Publication date: August 13, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takayuki UENO, Motohiko HIROSE, Hirokazu SUZUMURA
  • Patent number: 10626641
    Abstract: A door check apparatus includes a base member configured to be attached to a vehicle door, a threaded rod rotatably held by the base member, a first tubular member including a distal end portion configured to be connected to a vehicle main body, and a base portion. The threaded rod is arranged inside the first tubular member. At least a part of the first tubular member threadedly engages with the threaded rod. The first tubular member performs a relative movement in an axial direction relative to the threaded rod such that the first tubular member causes the threaded rod to rotate. The door check apparatus includes a brake mechanism configured to restrict the threaded rod from rotating.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 21, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takayuki Ueno, Masato Abe, Dai Hidaka, Hirokazu Suzumura
  • Patent number: 10580801
    Abstract: The purpose of the invention is to form a flexible display device where the substrate is made of resin, wherein the TFT can be annealed in high temperature; consequently, a reliability of the TFT is improved. The concrete measure is as follows. A display device having a pixel electrode and a TFT including a semiconductor layer on a substrate comprising: a source region of the semiconductor layer connects with a source electrode, a drain region of the semiconductor layer connects with a drain electrode; the pixel electrode connects with the source electrode; the drain electrode connects with a video signal line; a distance between the drain electrode and the substrate is smaller than a distance between the semiconductor and the substrate, the semiconductor layer is formed between the pixel electrode and the substrate.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: March 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Isao Suzumura, Hajime Watakabe, Akihiro Hanada, Hirokazu Watanabe, Yohei Yamaguchi, Marina Shiokawa, Ryotaro Kimura
  • Patent number: 10459304
    Abstract: A display device comprising: a first TFT using silicon (Si) and a second TFT using oxide semiconductor are formed on a substrate, a distance between the silicon (Si) and the substrate is smaller than a distance between the oxide semiconductor and the substrate, a drain source electrode of the first TFT connects with the silicon (Si) via a first through hole, a drain source electrode of the second TFT connects with the oxide semiconductor via a second through hole, metal films are made on the oxide semiconductor sandwiching a channel of the oxide semiconductor in a plan view, the channel has a channel width, an ALO layer is formed on the metal films and the oxide semiconductor, the second source drain electrode and the metal films are connected via the second through hole formed in the AlO layer.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: October 29, 2019
    Assignee: Japan Display Inc.
    Inventors: Hajime Watakabe, Isao Suzumura, Hirokazu Watanabe, Akihiro Hanada
  • Publication number: 20190250443
    Abstract: A display device comprising: a first TFT using silicon (Si) and a second TFT using oxide semiconductor are formed on a substrate, a distance between the silicon (Si) and the substrate is smaller than a distance between the oxide semiconductor and the substrate, a drain source electrode of the first TFT connects with the silicon (Si) via a first through hole, a drain source electrode of the second TFT connects with the oxide semiconductor via a second through hole, metal films are made on the oxide semiconductor sandwiching a channel of the oxide semiconductor in a plan view, the channel has a channel width, an ALO layer is formed on the metal films and the oxide semiconductor, the second source drain electrode and the metal films are connected via the second through hole formed in the AlO layer.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventors: Hajime WATAKABE, Isao SUZUMURA, Hirokazu WATANABE, Akihiro HANADA
  • Publication number: 20190244979
    Abstract: A display device to improve reliability of the TFT of the oxide semiconductor, including: a substrate including a display area where plural pixels are formed, the pixel includes a first TFT of a first oxide semiconductor; a first gate insulating film is formed on the first oxide semiconductor, a gate electrode is formed on the first gate insulating film, an interlayer insulating film is formed over the gate electrode; the gate insulating film includes a first silicon oxide film, the gate electrode includes a first gate layer made of a second oxide semiconductor and a second gate layer made of metal or alloy; the interlayer insulating film has a first interlayer insulating film including a second silicon oxide film, and a second interlayer insulating film including a first aluminum oxide film on the first interlayer insulating film.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: Japan Display Inc.
    Inventors: Isao SUZUMURA, Yohei YAMAGUCHI, Hajime WATAKABE, Akihiro HANADA, Hirokazu WATANABE, Marina SHIOKAWA
  • Patent number: 10317763
    Abstract: A display device comprising: a first TFT using silicon (Si) and a second TFT using oxide semiconductor are formed on a substrate, a distance between the silicon (Si) and the substrate is smaller than a distance between the oxide semiconductor and the substrate, a source/drain electrode of the first TFT connects with the silicon (Si) via a first through hole, a source/drain electrode of the second TFT connects with the oxide semiconductor via a second through hole, metal films are made on the oxide semiconductor sandwiching a channel of the oxide semiconductor in a plan view, the channel has a channel width, an AlO layer is formed on the metal films and the oxide semiconductor, the second source/drain electrode and the metal films are connected via the second through hole formed in the AlO layer.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: June 11, 2019
    Assignee: Japan Display Inc.
    Inventors: Hajime Watakabe, Isao Suzumura, Hirokazu Watanabe, Akihiro Hanada
  • Publication number: 20190145137
    Abstract: A door check apparatus includes a base member configured to be attached to a vehicle door, a threaded rod rotatably held by the base member, a first tubular member including a distal end portion configured to be connected to a vehicle main body, and a base portion. The threaded rod is arranged inside the first tubular member. At least a part of the first tubular member threadedly engages with the threaded rod. The first tubular member performs a relative movement in an axial direction relative to the threaded rod such that the first tubular member causes the threaded rod to rotate. The door check apparatus includes a brake mechanism configured to restrict the threaded rod from rotating.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 16, 2019
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takayuki UENO, Masato ABE, Dai HIDAKA, Hirokazu SUZUMURA
  • Patent number: 10138670
    Abstract: A lifting device lifting and lowering a window glass of a door, the lifting device including a drive mechanism for lifting and lowering the window glass, a support plate supporting the drive mechanism, and a carrier attached to the support plate in a slidable manner, and lifted and lowered by the drive mechanism, wherein the support plate includes a through hole, and a stopper which is provided at an inner panel of the door and stops of the carrier is inserted through the through hole.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 27, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hidefumi Katayama, Hirokazu Suzumura, Shigeyuki Suzuki, Katsumi Chono, Takayuki Ueno
  • Patent number: 9896874
    Abstract: A lifting and lowering apparatus includes a support plate, a carrier for lifting and lowering a window glass and a drive mechanism for moving the carrier. The drive mechanism includes a cable, a drum, a pulley and a bracket for mounting the pulley to the support plate. The support plate is provided with first and second fixing portions. The first fixing portion is arranged at an outer side of the cable and the second fixing portion is arranged at an inner side of the cable. The bracket includes first and second mounting portions provided for the first and second fixing portions respectively. The first mounting portion includes a first extension portion making contact with an outer surface of the first fixing portion and the second mounting portion includes a second arm portion making contact with an inner surface of the second fixing portion.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: February 20, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Katsumi Chono, Shigeyuki Suzuki, Hidefumi Katayama, Hirokazu Suzumura, Takayuki Ueno
  • Publication number: 20170191302
    Abstract: A lifting and lowering apparatus includes a support plate, a carrier for lifting and lowering a window glass and a drive mechanism for moving the carrier. The drive mechanism includes a cable, a drum, a pulley and a bracket for mounting the pulley to the support plate. The support plate is provided with first and second fixing portions. The first fixing portion is arranged at an outer side of the cable and the second fixing portion is arranged at an inner side of the cable. The bracket includes first and second mounting portions provided for the first and second fixing portions respectively. The first mounting portion includes a first extension portion making contact with an outer surface of the first fixing portion and the second mounting portion includes a second arm portion making contact with an inner surface of the second fixing portion.
    Type: Application
    Filed: June 8, 2015
    Publication date: July 6, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Katsumi CHONO, Shigeyuki SUZUKI, Hidefumi KATAYAMA, Hirokazu SUZUMURA, Takayuki UENO
  • Publication number: 20170138110
    Abstract: A lifting device lifting and lowering a window glass of a door, the lifting device including a drive mechanism for lifting and lowering the window glass, a support plate supporting the drive mechanism, and a carrier attached to the support plate in a slidable manner, and lifted and lowered by the drive mechanism, wherein the support plate includes a through hole, and a stopper which is provided at an inner panel of the door and stops of the carrier is inserted through the through hole.
    Type: Application
    Filed: June 3, 2015
    Publication date: May 18, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hidefumi KATAYAMA, Hirokazu SUZUMURA, Shigeyuki SUZUKI, Katsumi CHONO, Takayuki UENO
  • Patent number: 9180798
    Abstract: The present invention provides a lock device for locking by inserting a striker into a base member. The lock device includes a latch, which is disposed on the base member and constrains and releases the striker, and a pawl, which holds the latch. Backlash of the latch is limited by a simple structure. A cam member is rotationally connected to the base member by a rotation shaft different from that of the pawl. An engaging protrusion and recess are formed on the pawl and cam member, respectively. When the pawl is at an allowable position, the protrusion and recess are engaged with each other to hold the cam member. The engagement is released when the pawl rotates to a holding position, engaging the cam member with the latch, which is at a locked position, thereby rotating the latch such that the striker contacts the bottom surface of a base groove.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: November 10, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hirokazu Suzumura, Kazuya Iwasa, Haruo Kato, Nobuyoshi Teraoka
  • Publication number: 20130328372
    Abstract: The present invention provides a lock device for locking by inserting a striker into a base member. The lock device includes a latch, which is disposed on the base member and constrains and releases the striker, and a pawl, which holds the latch. Backlash of the latch is limited by a simple structure. A cam member is rotationally connected to the base member by a rotation shaft different from that of the pawl. An engaging protrusion and recess are formed on the pawl and cam member, respectively. When the pawl is at an allowable position, the protrusion and recess are engaged with each other to hold the cam member. The engagement is released when the pawl rotates to a holding position, engaging the cam member with the latch, which is at a locked position, thereby rotating the latch such that the striker contacts the bottom surface of a base groove.
    Type: Application
    Filed: February 24, 2012
    Publication date: December 12, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hirokazu Suzumura, Kazuya Iwasa, Haruo Kato, Nobuyoshi Teraoka
  • Patent number: 8256317
    Abstract: A transmission device that transmits rotation of a drive cable to a screw shaft is provided. The transmission device includes a worm gear attached to the drive cable, a helical gear attached to the screw shaft, a gear case, a pair of first bearing wall portions, and a pair of second bearing wall portions. The gear case has an opening on one side so as to accommodate the worm gear and the helical gear. The first bearing wall portions are integrally formed with the gear case so as to face each other along the axial direction of the drive cable, and rotatably support both ends of the worm gear. The second bearing wall portions are integrally formed with the gear case so as to face each other along the axial direction of the screw shaft, and rotatably support both ends of the helical gear.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: September 4, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoshitaka Koga, Hirokazu Suzumura
  • Patent number: 8256822
    Abstract: A driving force transmitting device having a direction changing gear mechanism which transmits a rotation torque from a drive shaft to a driven shaft having an axis extending in a direction different from a direction of an axis of the drive shaft. The direction changing gear mechanism includes an output, an input gear attached to the drive shaft for restricting a relative rotation and engaged with the output gear, a gear housing rotatably supporting the output gear and the input gear under engagement condition, wherein one of the output gear and the input gear is provided with a rotation phase adjusting portion exposed outside for adjusting a rotation phase of the output gear relative to a rotation phase of the second engagement portion of the driven shaft upon the output gear being assembled to the driven shaft.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 4, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoshitaka Koga, Hirokazu Suzumura, Jueru Shimizu
  • Patent number: 8171823
    Abstract: A power seat driving apparatus for a vehicle includes a moving unit and a decelerating mechanism, wherein the decelerating mechanism includes a driving gear to which a driving force is inputted, a driven gear engaged with the driving gear so as to be rotatably driven by the driving gear while decelerating a rotational speed of the driving force transmitted thereto, and a housing, at least one of the driving gear and the driven gear includes a shaft portion and a gear portion including a tooth portion, which engages with a tooth portion of the other one of the driving gear and the driven gear, an annular recessed portion is formed at a stepped portion between the gear portion and the shaft portion, the annular recessed portion, and the housing includes a bearing bore having a bearing surface and an annular protruding portion, which is fitted into the annular recessed portion.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: May 8, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoshitaka Koga, Hirokazu Suzumura, Eiichiro Tsuji
  • Publication number: 20100288903
    Abstract: A screw configuration of a seat apparatus for a vehicle includes a screw member axially rotatably supported at one of a lower rail adapted to be mounted on a floor of the vehicle and an upper rail slidably supported at the lower rail and adapted to support a seat for the vehicle, extending in a sliding direction of the upper rail, including a protruding portion configured by two raised portions formed to be raised at an outer circumferential surface of the screw member from both sides in an axial direction of the screw member by cold rolling so as to be coupled and to contact each other, and positioned in the axial direction of the screw member by means of the protruding portion, and a transmitting nut member fixed to the other one of the lower rail and the upper rail so that the screw member is screwed there through.
    Type: Application
    Filed: March 30, 2010
    Publication date: November 18, 2010
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshitaka KOGA, Hirokazu Suzumura, Jueru Shimizu, Kenji Tatewaki
  • Patent number: 7810780
    Abstract: According to an aspect of the present invention, a drive mechanism for a power seat apparatus for a vehicle includes an electric motor, a speed-reduction gear mechanism, a gear housing for housing therein the speed-reduction gear mechanism and supporting thereto the electric motor, the gear housing including a housing body having an accommodating space, a cover mounted to the housing body, and a retaining member provided on the housing body for fixedly retaining the cover on the housing body by rotating the cover relative to the housing body upon assembly, and a bracket through which the gear housing is supported by the driven member, the bracket including a receiving portion and a rotation-restricting surface.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 12, 2010
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoshitaka Koga, Hirokazu Suzumura